Blazars with spine-sheath structures

Blazars with spine-sheath structures

Multi-frequency (5, 8, 15 GHz) total intensity and polarization VLBA images of three sources from a complete sample of BL Lac objects (0745+241, 1418+546, and 1652+398) are presented together with global VLBI images of the quasar 1055+018 at 1.6 and 5 GHz. These images show signs of a spiral magneti...

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Veröffentlicht in:Astronomy reports 2005-01, Vol.49 (1), p.5-12
Hauptverfasser: Pushkarev, A B, Gabuzda, D C, Vetukhnovskaya, Yu N, Yakimov, V E
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Astrophysics
Magnetic fields
Quasars
Spine
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creator Pushkarev, A B
Gabuzda, D C
Vetukhnovskaya, Yu N
Yakimov, V E
description Multi-frequency (5, 8, 15 GHz) total intensity and polarization VLBA images of three sources from a complete sample of BL Lac objects (0745+241, 1418+546, and 1652+398) are presented together with global VLBI images of the quasar 1055+018 at 1.6 and 5 GHz. These images show signs of a spiral magnetic field in the central channel of the jet, as well as a region of longitudinal magnetic field in 'sheaths' at the jet edges, which may indicate an interaction between the jet and the surrounding medium on spatial scales of several parsecs.
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subjects Astrophysics
Magnetic fields
Quasars
Spine
title Blazars with spine-sheath structures
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